X0202 3 2006-11-09 0 0001121702 METABOLIX, INC. MBLX 0001377832 Strobeck Matthew C/O METABOLIX, INC. 21 ERIE STREET CAMBRIDGE MA 02139 1 0 0 0 Series 05 Preferred Stock Common Stock 50000 I By Guggenheim Portfolio Company XIX, LLC Series 05 Preferred Stock Common Stock 467500 I By Westfield Life Sciences Fund II L.P. Series 05 Preferred Stock Common Stock 82500 I By Westfield Life Sciences Fund L.P. Series 05 Preferred Stock Common Stock 66667 I By Westfield Microcap Fund L.P. The Issuer's preferred stock will automatically be converted into Common Stock on a .8173-for-1 basis upon the closing of the Issuer's initial public offering. The reporting person is a senior investment analyst at Westfield Capital Management Company, LLC. The reporting person shares voting and investment power over shares held by Guggenheim Portfolio Company XIX, LLC, Westfield Life Science Fund II L.P., Westfield Life Science Fund L.P. and Westfield Microcap Fund L.P. Exhibit 24 - Power of Attorney /s/ Sarah P. Cecil, attorney-in-fact 2006-11-09